What are the two major divisions of venomous snakes?

The two major divisions of venomous snakes are the Elapidae and Viperidae families. Elapidae includes snakes such as cobras, mambas, and coral snakes, known for their neurotoxic venom that affects the nervous system. Viperidae, on the other hand, comprises vipers and pit vipers, which possess hemotoxic venom that can damage tissues and disrupt blood clotting. Both families have evolved different venom types suited to their predatory habits and ecological niches.